var n = $(".xfade-banner").get.length;
var active = Math.floor(Math.random() * n);
if (active == n) active = 0;

$(document).ready(function(){
	$(".xfade-banner").each(function(intIndex) {
		if (intIndex != active) $(this).css({'display' : 'none'});
	});
	setInterval("crossfade()", 5000);
});

function crossfade() {
	$(".xfade-banner:eq(" + active + ")").fadeOut('slow');
	active = (active + 1) % 4;
	$(".xfade-banner:eq(" + active + ")").fadeIn('slow');
}